// JavaScript Document

var maxc = 4; //共有菜单数目
var tab_l = 1;
var interval;

function displayd(CID)
{	
	clearInterval(interval);
	for(var i=1;i<=maxc;i++)
	{
		switch(i){
			case 1:divname="a"; break;
			case 2:divname="b"; break;
			case 3:divname="c"; break;
			case 4:divname="d"; break;
		}
	
		var objx=document.getElementById(divname);
		if("d"+i == CID)
		{
			tab_l = i;
			obj=document.getElementById("d"+i);
			obj.style.display="block";
			objx.className = "normal1";
		}
		else
		{
			obj=document.getElementById("d"+i);
			obj.style.display="none";
			objx.className = "normal";
		}
	}
}


function div_out(){
	interval=setInterval("div_play()",5000);
}



function div_play(){
	try{
	if (tab_l == maxc) 
		tab_l=1 ;
	else 
		tab_l++;

	for(var i=1;i<=maxc;i++)
	{
		switch(i){
			case 1:divname="a"; break;
			case 2:divname="b"; break;
			case 3:divname="c"; break;
			case 4:divname="d"; break;
		}
	
		var objx=document.getElementById(divname);
		if(i==tab_l)
		{
			obj=document.getElementById("d"+i);
			obj.style.display="block";
			objx.className = "normal1";
		}
		else
		{
			obj=document.getElementById("d"+i);
			obj.style.display="none";
			objx.className = "normal";
		}
	}
	
	}catch(e){};
}